spark plug gap specs for 4.2l
 

Would anyone know where to find the spark plug gap specs for the 2000 a6 4.2 engine. It's not listed anywhere in my owners material, I called two Audi dealerships and they didn't know either, telling me the plugs they use come pre-gapped and they had no reference for gap specs? What the !#$?&
I did buy some Bosch plugs that came pre-gapped, but I would like to know just for the hell of it.